Cita APA (7a ed.)

Clark, G., & Piggott, S. (1968). Prehistoric societies. Knopf.

Cita Chicago Style (17a ed.)

Clark, Grahame, y Stuart Piggott. Prehistoric Societies. New York: Knopf, 1968.

Cita MLA (9a ed.)

Clark, Grahame, y Stuart Piggott. Prehistoric Societies. Knopf, 1968.